snarkvm_r1cs/
errors.rs

1// Copyright (C) 2019-2023 Aleo Systems Inc.
2// This file is part of the snarkVM library.
3
4// Licensed under the Apache License, Version 2.0 (the "License");
5// you may not use this file except in compliance with the License.
6// You may obtain a copy of the License at:
7// http://www.apache.org/licenses/LICENSE-2.0
8
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15pub type SynthesisResult<T> = Result<T, SynthesisError>;
16
17/// This is an error that could occur during circuit synthesis contexts,
18/// such as CRS generation, proving or verification.
19#[derive(Debug, Error)]
20pub enum SynthesisError {
21    #[error("{}", _0)]
22    AnyhowError(#[from] anyhow::Error),
23    /// During synthesis, we lacked knowledge of a variable assignment.
24    #[error("An assignment for a variable could not be computed")]
25    AssignmentMissing,
26    /// Handles a failed conversion of objects into constraint field elements.
27    #[error("Failed to convert object into constraint field elements")]
28    ConstraintFieldError(#[from] snarkvm_fields::ConstraintFieldError),
29    /// During synthesis, we divided by zero.
30    #[error("Division by zero during synthesis")]
31    DivisionByZero,
32    /// During synthesis, we constructed an unsatisfiable constraint system.
33    #[error("Unsatisfiable constraint system")]
34    Unsatisfiable,
35    /// During synthesis, our polynomials ended up being too high of degree
36    #[error("Polynomial degree is too large")]
37    PolynomialDegreeTooLarge,
38    /// During proof generation, we encountered an identity in the CRS
39    #[error("Encountered an identity element in the CRS")]
40    UnexpectedIdentity,
41    /// During proof generation, we encountered an I/O error with the CRS
42    #[error("Encountered an I/O error")]
43    IoError(std::io::Error),
44    /// During verification, our verifying key was malformed.
45    #[error("Malformed verifying key, public input count was {} but expected {}", _0, _1)]
46    MalformedVerifyingKey(usize, usize),
47    /// During CRS generation, we observed an unconstrained auxiliary variable
48    #[error("Auxiliary variable was unconstrained")]
49    UnconstrainedVariable,
50}
51
52impl From<std::io::Error> for SynthesisError {
53    fn from(e: std::io::Error) -> SynthesisError {
54        SynthesisError::IoError(e)
55    }
56}
snarkvm_r1cs/errors.rs

snarkvm_r1cs/
errors.rs
